Method for testing divergence angle of neutron Soller collimator

The invention discloses a method for testing divergence angle of a neutron Soller collimator. The method includes the steps of selecting a Gaussian function to describe an angular divergence distribution function of a neutron source and an angular divergence response function of a neutron transmission collimator, subjecting the angular divergence distribution function of the neutron source and the angular divergence response function of the neutron transmission collimator to mathematical integration to form a rocking curve expression; performing experimental measurement to obtain experimental data of rocking curves of neutron intensity changing with the rocking angle after neutrons pass the to-be-tested neutron Soller collimator and a reference neutron Soller collimator; subjecting the experimental data of the rocking curves to data fitting through the rocking curve expression so as to obtain a rocking curve standard error; calculating a divergence angle of the to-be-tested neutron Soller ...

Electric bicycle auxiliary riding system and control method

The invention discloses an electric bicycle auxiliary riding system and a control method, and aims to overcome danger sense of an electric bicycle for front barriers in the advancing process. The system comprises a long-distance microwave detection radar, a controller and a relay switching circuit, the long-distance microwave detection radar is connected with the controller and used for detecting data of barriers in the running direction of the electric bicycle and transmitting the detected data to the controller, the controller is used for controlling the relay switching circuit to switch on a battery charging circuit when the electric bicycle needs deceleration, and controlling the relay switching circuit to switch on a power supply circuit of the electric bicycle when the electric bicycle is in a brake state, and the relay switching circuit is connected with a motor of the electric bicycle and the battery charging circuit and used for switching on the battery charging circuit of the ...

Method for measuring oxide, phosphorus, manganese and copper content of directly reduced iron

The invention provides a method for measuring oxide, phosphorus, manganese and copper content of directly reduced iron. The method comprises the following steps of: measuring the X-ray fluorescent line strength of a test sample to be tested by using conventional X-ray fluorescent spectrometry, and obtaining corresponding oxide, phosphorus, manganese and copper content values in a standard working curve of oxide, phosphorus, manganese and copper according to the X-ray fluorescent line strength, wherein the test sample to be tested is obtained by firing, adding lithium tetraborate, lithium nitrate solution and ammonium iodide solution, mixing, drying, heating till melting and cooling. After the sample is melted at one time, the silicon dioxide, calcium oxide, magnesium oxide, aluminum sesquioxide, titanium dioxide, potassium oxide, phosphorus, manganese and copper content of the test sample can be directly measured; and the method is convenient for operation, has high measurement accuracy ...

Process for removing arsenic in alkaline etching waste liquid for producing printed circuit board

The invention relates to a method for removing arsenic in printed circuit board basic waste etching solution; ferric chloride solution with a concentration of 0.5-5mol/L is prepared and is ready for use according to the dosage of 1-5kg/m<3> of the printed circuit board basic waste etching solution; then the ferric chloride solution is slowly added in the printed circuit board basic waste etching solution with corresponding amount, is stirred to carry out reaction for 30-120min and is filtered. The precipitate generated in the invention is easy to be filtered, arsenic removal effect is significant, arsenic residual rate is low, additional filtrating aid approach is not needed, and the whole technique is simple and controllable.

Method for preparing high-purity metal vanadium

The invention belongs to the technical field of non-ferrous metal smelting, and particularly relates to a method for preparing high-purity metal vanadium. When the aluminothermic reduction reaction is carried out, simple substance aluminum is used as a reducing agent, vanadium oxide is reduced into vanadium metal simple substance, aluminum participating in the reaction is oxidized into aluminum oxide, a large amount of heat energy is released to melt various metal simple substances to form alloy liquid, aluminum oxide floats on the surface of the obtained alloy liquid, and aluminum oxide and metal alloy are naturally separated after cooling; removing aluminum oxide to obtain a vanadium-aluminum alloy; as a slag former, the calcium compound can reduce the primary crystal temperature of aluminum oxide and provide longer impurity floating time, so that the purity of the obtained vanadium-aluminum alloy is higher; after the high-purity vanadium-aluminum alloy is obtained, the metal vanadium ...

Hybrid Lithium Battery Pack-Reversible Solid Oxide Cell Power System and Application thereof

The present invention discloses a hybrid lithium battery pack-reversible solid oxide cell power system and application thereof, relating to the field of battery devices, wherein the power system comprises: an RSOC comprising two operation modes: SOFC mode and SOEC mode; a hydrogen storage tank, an oxygen storage tank, and a water storage tank that provide reaction materials; a solar energy collection plate used to provide thermal energy required for the SOEC mode; a lithium battery pack used to provide electric energy required for the SOEC mode; a charging module used to charge the lithium battery pack in the SOFC mode; a power distribution module used to receive electric energy of the lithium battery pack and/or the RSOC; a power supply module used to supply power to a load; and a control module used to control system operation. The application thereof comprises a device of the power system in ship driving and a use method thereof. The present invention not only reduces the structural complexity of a heat source supply device, but also has the characteristics of long duration, fast start-up, and stable output power. 1/5 t0)0 cy-0) 8b 0 8 r 100 Cathode liis

Image processing method and device for positioning and capturing bar code region in image

The invention discloses an image processing method for positioning and capturing a bar code region in an image, and the method is suitable for an image processing device. The method comprises: defining a plurality of sampling lines in a sampling image, and finding sections in which the bar code possibly exists along each sampling line by the image processing device; and if the image processing device is on two adjacent sampling lines, and the found section in which the bar code possibly exists is positioned approximately at the position of a transverse shaft, judging that a quadrilateral region exists between the sections, in which the bar code exists, of two adjacent sampling lines. Therefore, the image processing device can position and capture the bar code region in the image quickly.

Cerium-doped nanometer barium ferrite thin film and method for making same

The invention relates to a cerium-doped nanometer barium ferrite film and a preparation method thereof. The film is characterized in that the formula comprises 1.48 to 1.60g/100ml of glycol, 2.51 to 2.71g/100ml of citric acid, 1.74g/100ml of ferric nitrate, 0.125g/100ml of barium nitrate, and 0.04 to 0.125g/100ml of cerium nitrate. The preparation method comprises: a crystalline nanometer barium ferrite film is prepared on a quartz substrate; the cerium-doped nanometer barium ferrite film with high purity is obtained through the optimization of preparation technology; and the film can be usedfor preparing magnetic recording materials and wave-absorbing materials. The method has the advantages that the method has simple process flow and low cost, is convenient for preparing films on various substrates with different shapes, is easy to obtain an uniform and multi-component oxide film, is easy for quantitative doping, and can effectively control the constituents and a microscopic structure ...

Master-salve control system in rolling mill screw-down system

The invention relates to a master-salve control system in a rolling mill screw-down system. The master-salve control system mainly comprises a small valve and a big valve, wherein the small valve is the main valve, and the big valve is the secondary valve; the small valve is a small-flow high-precision electro-hydraulic servo valve, and connected with a screw-down cylinder by a first hydraulic control one-way valve; the small valve is provided with an electrical feedback and a spool displacement detection lead wire; the big valve is a big-flow medium-precision electro-hydraulic servo valve, and connected with the screw-down cylinder by a second hydraulic control one-way valve; the two hydraulic control one-way valves are controlled to be opened and closed by a solenoid directional controlvalve respectively; and a safety valve group is arranged between the small valve and the big valve and the screw-down cylinder. In the master-salve control system, the small valve ensures the precision, ...

Nanometer hydrocarbon type ammonium nitrate fuel oil explosive and application thereof in hard rock blasting field

The invention provides a nano hydrocarbon type ammonium nitrate fuel oil explosive and application thereof in the field of hard rock blasting. The nanometer hydrocarbon type ammonium nitrate fuel oil explosive comprises porous granular ammonium nitrate, base oil and nanometer hydrocarbon fuel, the nanometer hydrocarbon fuel comprises water, free gas phase hydrogen, free liquid phase hydrogen, solid phase hydrogen and pulverized coal, the solid phase hydrogen is attached to the surface of the pulverized coal to form hydrogen-attached pulverized coal, the particle size D50 of the pulverized coal is 0.45-1.18 microns, the particle size D90 of the pulverized coal is 2.5-4 microns, the viscosity of the nanometer hydrocarbon fuel is 80-350 mPa.s, and the particle size D90 of the nanometer hydrocarbon fuel is 0.5-1.5 microns. And the bulk density of the nano hydrocarbon type ammonium nitrate fuel oil explosive is 0.83-0.86 g/cm < 3 >. The nano hydrocarbon fuel is adopted to replace at least part ...

Centrifugal mute pump

The invention relates to the technical field of centrifugal pumps, in particular to a centrifugal mute pump which comprises a base, a damping plate is mounted on the base, a cushion block is mounted at the top of the damping plate, a pump ball is clamped through a circular groove, the center of the bottom of the pump ball is in contact with vibration guide cotton, and the periphery of the pump ball is in contact with vibration dampers. When the motor is started to operate, water enters and flows out of the pump ball, vibration and noise are generated, the vibration guide cotton makes contact with the pump ball and transmits the vibration into the shock pad, the mute effect is improved through the physical effect of the shock pad, the four corners of the pump ball make contact with the shock absorbers, the shock absorbers can be attached to the bottom of the pump ball, and vibration can be transmitted to the shock absorbers; in addition, after the centrifugal pump is not used for a long ...

Long-stroke lifting distributing hopper and distributing machine

The utility model relates to a long-stroke lifting distributing hopper and a distributing machine. The long-stroke lifting material distribution hopper comprises an installation frame and a hopper body arranged on the installation frame through a double-speed lifting device. The double-speed lifting device comprises a chain and a lifting device, wherein one end of the chain is fixed to the installation frame, and the other end of the chain bypasses a guide wheel and is fixedly connected with the hopper body. When the hopper ascends and descends, the oil cylinder drives the chain to ascend anddescend, then the chain drives the hopper to ascend and descend, the lifting stroke of the hopper is two times that of the oil cylinder, and therefore the overall lifting stroke of the distributing machine is increased by two times.

Coating additive as well as preparation method and application thereof

The invention relates to the technical field of polymers, in particular to a coating additive as well as a preparation method and application thereof. The coating additive is composed of a polyether derivative skeleton and at least one compound derived from a general formula A, wherein Ra is selected from hydrogen,-alkyl,-alkylene-OH,-O-Rb, alkylene-O-Rb, alkyl spaced by one or more heteroatoms, alkyl spaced by one or more first spacer groups alone or in combination, alkyl substituted by one or more first substituents, and heteroalkyl substituted by one or more first substituents. The coating additive can effectively change the wettability of the coating and has efficient anti-aging performance, and the preparation method is simpler, low-carbon and environment-friendly.

APPARATUS Of IMAGERY HAS X-RAYS

Dans le but d'offrir un appareil d'imagerie par rayons X comprenant un projecteur-collimateur capable d'ajuster facilement et précisément une position de rayonnement d'un faisceau lumineux, un premier flux lumineux est constitué dans un plan perpendiculaire à la direction de l'axe y qui est une direction perpendiculaire et un second flux lumineux dans le plan perpendiculaire est réfléchi et déplacé dans le plan perpendiculaire pour produire un faisceau lumineux. Par conséquent, la position de rayonnement du faisceau lumineux sur un sujet (24) peut être ajustée d'une façon indépendante par le mouvement Δy dans la direction perpendiculaire en utilisant une première vis et le mouvement Δx dans le plan perpendiculaire en utilisant une seconde vis. Il en résulte que l'ajustement d'une position de champ de rayonnement de rayons X par un opérateur peut être réalisé non seulement facilement mais également avec une grande précision.

Steel belt degreasing device

The invention discloses a steel belt degreasing device, and relates to the technical field of steel belt degreasing, the steel belt degreasing device comprises a treatment cylinder, a feeding port is formed in the surface of one side of the treatment cylinder, a discharging port is formed in the side, opposite to the feeding port, of the surface of the treatment cylinder, and a steel belt body penetrates through the feeding port and the discharging port; a mounting box is mounted on the surface of the treatment barrel in an embedded mode, the cleaning assembly is mounted in the mounting box, one end of the cleaning assembly penetrates through the treatment barrel, extends into the treatment barrel and makes contact with the surface of the steel belt body, and the cleaning assembly is used for cleaning and degreasing the surfaces of the two sides of the steel belt body; and the scraping part is arranged above the treatment barrel, and the bottom surface of the scraping part is flush with ...

Electro-hydraulic profiling mechanism of soybean precision seeder

The invention discloses an electro-hydraulic profiling mechanism of a soybean precision seeder, relating to agricultural machinery. A profiling mechanism assembly is mounted on a mainframe; a rocker plate assembled with a ground profiling support plate is mounted on the profiling mechanism assembly via a hinge; sensors are respectively mounted on the two sides of the upper end of the rocker plate on the profiling mechanism assembly; the two ends of a spring are respectively connected with the rocker plate and the profiling mechanism assembly; the two ends of a hydro-cylinder are respectively connected with a parallel four-bar mechanism via a hinge; the sensors and a profiling signal processor, the profiling signal processor and a solenoid directional control valve are respectively connected via a first wire and a second wire; and the solenoid directional control valve is connected with the hydro-cylinder via a hydro-cylinder oil line. The electro-hydraulic profiling mechanism of the soybean ...

Special three-way electro hydraulic servo valve for down-pressing system of rolling mill

The invention relates to a special three-way electro hydraulic servo valve for a down-pressing system of a rolling mill, which mainly consists of a main valve, a jet flow pipe pilot level and a detection feedback device, wherein the main valve uses a four-step three-way slide valve with a valve sleeve and is driven by the jet flow pipe type pilot level, the end part of a valve core is provided with a displacement sensor, the position of the valve core realizes the closed ring control through the signal feedback of a control circuit and the displacement sensor, the jet flow pipe pilot level mainly comprises a moment motor, a jet flow pipe and a receiver, the moment motor is arranged in an upper cover of the main valve, a dry type permanent-magnet structure is adopted, the jet flow pipe is arranged in a middle valve block, and two cavities of the receiver are communicated to both ends of a main valve core through an oil passage of the main valve body. The invention has the advantages of simple ...

Computer table

The invention provides a computer table which comprises a first supporting frame, a second supporting frame and a supporting plate. The first supporting frame comprises a groove-shaped first fixed frame and fixed retaining plates, the fixed retaining plates are transversely connected on a groove wall inside the first fixing frame, the second supporting frame comprises a groove-shaped second fixing frame and a fixed retaining plate which is transversely connected on a groove wall inside the second fixed frame, height of the top of the second fixed frame is larger than that of the top of the first fixed frame, the supporting plate is a rectangular plate, extends outwards from the top of the second fixed frame in a manner of being perpendicular to the second supporting frame and is connected with the first supporting frame. The computer table has the advantages of simple structure, quickness in assembling, reasonableness in space utilization and the like.

Systems and methods for vehicle management

The present disclosure relates to an electronic device configured to send a service request of a service to a remote server; receive an authority from the remote server; and control, according to the authority, an on-board device mounted on a target vehicle that is assigned by the remote server to provide the service to a user associated with the electronic device.

Dry-type planishing mill non-contact type roller cleaning method

The invention belongs to the filed of cleaning and leveling of strip steel, in particular to a non-contact roll cleaning method for a dry planishing mill. The non-contact roll cleaning method for the dry planishing mill is characterized in that: 1) a first dust suction hood and a second dust suction hood are arranged on a roll gap of an upper working roll and a lower working roll on the outlet side of the dry planishing mill in the flying direction of metallic dust, and suck away the metallic dust, wherein the first dust suction hood is positioned above a strip steel passing line, and the second dust suction hood is positioned below the strip steel passing line; and 2) a third dust suction hood is arranged on a roll gap of the upper working roll and an upper intermediate roll on the inlet side of the dry planishing mill in the flying direction of the metallic dust, and suck away the metallic dust; and a fourth dust suction hood is arranged on a roll gap of the lower working roll and a lower ...

Method for determining boron and manganese content in SYP sintering synergist

The invention provides a method for determining boron and manganese contents in the SYP sintering potentiating agent. The method comprises the following steps of: adding the SYP sintering potentiating agent sample to the mixed acid of hydrochloric acid and nitric acid before the determination, heating for dissolving; adding the mixed acid of sulfuric acid and phosphoric acid in the dissolved solution; adding water and heating to completely dissolve the salts therein; adding NaNO2 to the dissolved solution to reduce manganese therein into solvable divalent manganese so as to obtain the weakly acidic solution of the sample to be determined. Therefore, the boron and manganese contents in the SYP sintering promoting agent can be directly determined with the inductance coupling plasma atomic emission spectrometry in the prior art. The method has convenient operation, high precision rate of the determined boron and manganese contents, good stability, reproduction and precision of the detection ...

Turnout switch rail close contact detection method and system

The invention belongs to the technical field of rail traffic disease detection, and provides a turnout switch rail close attachment detection method and system.The detection system is composed of an imaging control module, a visual imaging module, an image processing module and a carrying platform, the visual imaging module comprises two imaging units located over main steel rails on the two sides respectively, and the imaging units are connected with the imaging control module; the steel rail is imaged in the moving direction of the carrying platform, the imaging area covers the steel rail, the switch rail and the turnout, and a texture image and/or a depth image of the imaging area are/is obtained. According to the automatic detection system and method based on the visual detection method, the imaging unit in the visual imaging module is improved, and switch rail close contact insufficiency detection and gap quantitative measurement can be automatically achieved.

X-RAY DIAPHRAGM, AND THE IRRADIATOR X-RAY APPARATUS

Röntgenbildgebungsvorrichtung

Mit dem Ziel, eine Röntgenbildgebungsvorrichtung mit einem Projektor-Kollimator zu schaffen, der es ermöglicht, eine Bestrahlungsposition eines Lichtstrahls einfach und genau einzustellen, ist ein erster Lichtstrom zu einem Lichtstrom eingerichtet, der in einer orthogonalen Platte vorhanden ist, die orthogonal zu einer Y-Achsenrichtung verläuft, die eine Orthogonalrichtung bildet, während ein zweiter Lichtstrom, der in der Orthogonalebene vorhanden ist, innerhalb der Orthogonalebene reflektiert und bewegt wird, um einen Lichtstrahl zu erzeugen. Demgemäß kann eine Bestrahlungsposition des Lichtstrahls über einem Objekt in einer unabhängigen Weise durch eine Bewegung um DELTAy in der Orthogonalrichtung mittels einer ersten Schraube und eine Bewegung um DELTAx innerhalb der Orthogonalebene mittels einer zweiten Schraube eingestellt werden. Als Ergebnis kann eine Einstellung einer Röntgenbestrahlungsfeldposition durch einen Bediener nicht nur auf einfache Weise, sondern auch mit hoher Genauigkeit ...

Röntgenblendenvorrichtung, Röntgenstrahlungsquelle und Röntgenvorrichtung

Zu schaffen ist eine Röntgenblendenvorrichtung (3), die mittels einer einfachen Konstruktion einen pyramidenförmigen Röntgenstrahl formt. Die Röntgenblendenvorrichtung (3) weist vier Blenden (301, 303, 305, 307) auf, die in einer umgebenden Beziehung an vier Seiten angeordnet sind, um einen pyramidenförmigen Röntgenstrahl mit einem Röntgenstrahlfokus als Scheitelpunkt zu formen, wobei die vier Blenden (301, 303, 305, 307) eine geeignete Konstruktion aufweisen, so dass sich die Blenden (301, 303, 305, 307) an Abschnitten, die den vier Innenrändern der Pyramide entsprechen, in Form von Parallelkreuzen ineinander fügen. DOLLAR A Die Blenden (301, 303, 305, 307) weisen jeweils mehrere Querträger (311, 331, 351, 371) auf, wobei die Querträger (311, 331, 351, 371) geeignet ausgebildet sind, so dass sich benachbarte Querträger (311, 331, 351, 371) ineinander fügen. Der Abstand zwischen einander gegenüberliegenden Blenden (301, 303, 305, 307) lässt sich verändern.

Röntgenstrahlungsquelle und bildgebende Röntgeneinrichtung

Um eine Röntgenstrahlungsquelle (10) zu schaffen, die in der Lage ist, den Relativdrehwinkel eines Kollimatorgehäuses (14) in Bezug auf eine Röntgenröhre (12) zu erfassen, weist die Röntgenstrahlungsquelle (10) auf: eine Röntgenröhre (12) mit einem Flansch (200), der so ausgebildet ist, dass er ein Röntgenstrahlungsausgangsfenster umgibt, ein Kollimatorgehäuse (14) mit einer mit einem Röntgeneintrittsfenster versehenen Eintrittsplatte (500), wobei das Kollimatorgehäuse (14) einen in seinem Innenraum angeordneten Kollimator (16) umschließt, einen an der Eintrittsplatte vorgesehenen Ring (610), der das Röntgeneintrittsfenster (502) umgibt, wobei der Ring (610) den Flansch (200) der Röntgenröhre (12) aufnimmt und eine Anzahl von in dem Ring (610) radial ausgebildeten Schlitzen (611-615) aufweist, eine Anzahl von Zungenelementen (621-625), die sich von außen zur Innenseite des Rings (610) durch die Schlitze (611-615) erstrecken und eine Rückseite des Flanschs (200) halten, sowie ein Sensormittel ...

Systems and methods for vehicle management

The present disclosure relates to an electronic device configured to send a service request of a service to a remote server; receive an authority from the remote server; and control, according to the authority, an on-board device mounted on a target vehicle that is assigned by the remote server to provide the service to a user associated with the electronic device.

Multiclass emotion analyzing method and system facing bilingual microblog text

The invention relates to a multiclass emotion analyzing method and a system facing a bilingual microblog text and belongs to the technical field of microblog text emotion analysis. The method comprises the following steps that (1) bilingual dictionary construction: corpus with an emotion inclination of a certain size is first collected, high frequent words with the emotion inclination can be extracted from the corpus, an emotional dictionary is then expanded by using an existing knowledge database and a vocabulary similarity calculating model, and finally network language and emotional signs are added in the emotional dictionary; (2) text pretreatment: the words are divided in a to-be-identified text, stop words are removed, and standardization treatment is conducted on English word shapes; (3) text characteristic space expression: the bilingual emotional dictionary is used for conducting vectorization on the text; (4) an emotional identifying task of the corpus text is realized through ...

Low NOx stepped and staged combustion device

The invention relates to a low NOx stepped and staged combustion device. The device comprises a body shell, a swirler arranged in the shell, first level oxidizing air arranged on the axis of an inner cylinder of the swirler, second level oxidizing air arranged around the first level oxidizing air, and a first level fuel combustion chamber arrange between the first level oxidizing air and the second level oxidizing air; moreover, the device also comprises third level oxidizing air arranged in blades of the swirler and supplied to second level fuel combustion chambers, at least three pairs of second level fuel combustion chambers and third level fuel combustion chambers which are arranged on a circular arc outside an outer cylinder of the swirler with equal spacing, and fourth level oxidizing air arranged between the outer cylinder and the second level fuel combustion chambers and the third level fuel combustion chambers. The device has the advantages of reducing local high temperature and ...

SYNTHESIS OF MARCOPORE DOUBLE FUNCTIONAL GROUP ANION EXCHANGE RESIN

... 一种大孔双宫能团阴离子交换树脂的合成方法是用工业异辛烷作为苯乙烯－二乙烯苯共聚合反应的致孔剂，用二甲胺和三甲胺组成的混合胺为胺化剂，控制混合胺中二甲胺的量，可制得含有不同强碱基和弱碱基的大孔双官能团阴离子交换树脂。它能用于从不同物种提取金和银。树脂总交换容量可达４．０毫克当量／克干树脂。对金的吸附容量可达３０毫克／克干树脂对银的吸附容量可达１０毫克／克干树脂。树脂的机械强度大于９９％。 ...

New antigen identification and curative effect prediction method

The invention discloses a new antigen identification and curative effect prediction method, which comprises the following steps: screening out candidate new antigens, co-culturing the candidate new antigens and lymphocytes, finding out the new antigens of the lymphocytes, which well react to the new antigens, as effective new antigens, and predicting the curative effect of the new antigens. The efficacy of an immunotherapy regimen targeting the neoantigen is predicted by analyzing the function and subtype of lymphocytes. The effective new antigen has great application prospects in preparation of therapeutic vaccines for tumors, vaccines for preventing tumor recurrence and immune cell therapy for treating tumors. The method can improve the efficiency of finding effective new antigens, and is convenient to apply. The tumor neoantigen can be rapidly and accurately identified, the neoantigen with a good prediction curative effect is screened and used for preparing the tumor polypeptide/mRNA ...

Software package processing method and device, equipment and medium

The invention relates to a software package processing method and device, equipment and a medium. The software package processing method comprises the following steps: searching a target management file with a packaging function from a plurality of management files of a target business system under the condition that the target business system meets a packaging condition; pulling an associated resource object related to the associated resource directory; and generating a system software package of the target service system based on the associated resource object. According to the embodiment of the invention, unified management of the resource objects of the target business system can be realized.

Methods and compositions for the treatment of dystonia

The present invention relates to methods and compositions for the treatment of dystonia in a mammal. More particularly the methods of the invention involves decreasing the expression of wild-type Dyt1 in the Purkinje cells of mammals exhibiting symptoms of dystonia in order to treat the dystonia.

Intermediate waste water treatment method of quinacridone pigment and modified macroporous absorbent resin used by method

The invention relates to an intermediate waste water treatment method of quinacridone pigment and modified macroporous absorbent resin used by the method. The treatment method comprises the following steps: firstly, removing solid substances in the waste water by waste water acid separation precipitation; then, using the modified macroporous absorbent resin for absorption so that quinacridone pigment intermediate products in the waste water can be absorbed on the resin; further carrying out biochemical and physicochemical treatment on the absorption outlet water for reaching the national second grade discharge standard. The modified macroporous absorbent resin is desorbed and regenerated through thermokalite desorption liquid, and then, the modified macroporous absorbent resin can be reused after being flushed by clean water. In the desorption regeneration process, the produced high-concentration desorption liquid is used for recovering the pigment intermediate products through acid separation ...

Polybasic O3 type layered sodium ion battery positive electrode material and preparation method thereof

The chemical formula of the multi-element O3 type layered sodium-ion battery positive electrode material is NaxNiaCubFecMndTieMfO2, M is one or more than two of Li, Mg, Zn, Al, Co, Sn, V, Zr, La and Nb, 0.8 < = x < = 1, 0.15 < = a < = 0.35, 0.02 < = b < = 0.15, 0.02 < = c < = 0.2, 0.25 < = d < = 0.45, 0.1 < = e < = 0.3, and 0 lt; f < = 0.15, and a + b + c + d + e + f = 1. By utilizing the synergistic effect of various elements, various variable valence elements are added to maximize the capacity of the material, meanwhile, various inactive elements are selected to enhance the structural stability of the material, the content range of the elements is accurately controlled, and the prepared O3-type positive electrode material is used for preparing the sodium ion battery, has high specific capacity, excellent cycling stability and rate capability, and can be widely applied to the field of lithium ion batteries. Compared with a trial-and-error mode in which a single element is gradually replaced ...

DIAPHRAGM HAS X-RAYS, IRRADIATOR HAS X-RAYS AND APPARATUS HAS X-RAYS

Le diaphragme (3) à rayons X de la présente invention forme un faisceau de rayons X pyramidal. Ce diaphragme (3) comporte quatre lames (301, 303, 305, 307) agencées en entourant quatre côtés afin de former un faisceau de rayons X pyramidal ayant un foyer de rayons X comme sommet, les quatre lames (301, 303, 305, 307) ayant une structure telle qu'elles sont assemblées entre elles sous la forme de croix parallèles en des parties correspondant aux bords à quatre coins de la pyramide.

Mitomycin C ophthalmic gel

The present invention relates to a mitomycin C ophthalmic gel and belongs to the technical field of ophthalmic preparations. The mitomycin C ophthalmic gel is characterized by comprising the following compositions in percentage by weight: 0.01 to 0.05 percent of mitomycin C, 10 to 20 percent of poloxamer P407, 2 to 10 percent of poloxamer P188, 0.01 to 0.1 percent of carbomer and the balance of normal saline. The MMC-C gel of the invention can solve the problem of solubility of insoluble medicaments, increases the stability of the ophthalmic preparation, and can directionally change the effect of the medicament and the characteristics of pharmacokinetics, thereby achieving the treatment effect of the medicament, reducing the untoward effect of the medicament, and better meeting the clinical requirement. The mitomycin C ophthalmic gel is prepared from a macromolecular material, and can prolong the retention time of the medicament in the eyes, reduce an outward diffusion speed of the medicament ...

Insurance renewal recommendation scheme generation method and device, computer equipment and storage medium

The invention discloses an insurance renewal recommendation scheme generation method, which is applied to the technical field of big data. The method provided by the invention comprises the steps of obtaining historical insurance policy information data of a target service from a big data system; acquiring an insurance renewal association tag according to the insurance policy service information of the historical insurance policy of the insurance user; obtaining associated insurance users from the insurance users according to the insurance renewal association tags, and calculating first historical insurance renewal rates of different product types corresponding to the insurance renewal association tag combination; obtaining a target insurance renewal association label combination according to the first historical insurance renewal rate; and matching the insurance renewal association tag of the insured user with the target insurance renewal association tag combination to obtain the target ...

Non-magnetic energy-saving forced convection heating furnace

The embodiment of the invention provides a non-magnetic energy-saving forced convection heating furnace which comprises a Venturi assembly, a heating device and a heating chamber, the Venturi assembly comprises a base, an accommodating space is formed in the base, a first inlet and a second inlet are formed in the base, and the first inlet is used for inputting normal-temperature air; the guide pipe is arranged in the accommodating space, and one end of the guide pipe is communicated with the first inlet; the nozzle is communicated with the other end of the guide pipe; the Venturi tube body sequentially comprises an inlet section, a contraction section, a throat and a diffusion section, the inlet section is connected with the base in a sealed mode, and the output end of the nozzle extends into the contraction section, is adjacent to the throat and is communicated with the diffusion section. The heating device is communicated with the diffusion section and is isolated from the heating device ...

Relieving gear of vehicle seat's slide rail

The utility model discloses a relieving gear of vehicle seat's slide rail for the pin joint is in the slide rail and correspond the buckle structure drive on locating the slide rail, and this relieving gear includes: a mount and a control structure, the mount is fixed in the slide rail, the control structure then contains: a support is rotationally connected in the mount and is had a spacing space, a control lever has a connection ends, and connection ends is corresponding to be inserted and be subject to in the spacing space, with an elastic component, elastic connection is between support and slide rail. With this, can reach assembly and production process comparatively simple, the easy effect that all becomes to and be favorable to production change fast with cost reduction's effect.

Gas detecting joint device

The invention discloses a gas detecting joint device. The device comprises at least two ports, a first valve connected with the first port and used for being connected with a first gas detecting instrument, and a second valve connected with the second port and used for being connected with a second gas detecting instrument. Therefore, the device can be simultaneously connected with the first gas detecting instrument and the second gas detecting instrument, so as to realize multi-purpose detection, improve the working efficiency, and reduce the damage probability of the ports of the gas detecting device.

Fat-reducing effervescent tablet

The invention discloses a slimming effervescent tablet which is prepared by pressing mixture powder into a tablet. The mixture comprises mulberry leaves, mulberries, cassia seeds, asparagus, lily roots and senna leaves. One or more kinds of hawthorns, lotus leaves, roses, chrysanthemum and medlars can be selectively added to the mixture. The slimming effervescent tablet is prepared easily and is directly infused with boiling water for use. In addition, the slimming effervescent tablet comprises natural products completely, has no toxic side effects and can achieve the purpose of healthy weight reduction.

Cascade forest and double-flow structure-based circRNA (Ribonucleic Acid) identification method

The invention relates to a circRNA (Ribonucleic Acid) identification method based on a cascade forest and a double-flow structure, in particular to a circRNA identification method based on a double-flow structure of an RNA sequence k-mer biological characteristic and a circRNA splicing position characteristic by utilizing the cascade forest, and aims to solve the problem that the identification result of an existing circRNA identification method is inaccurate. Obtaining preprocessed RNA sequences containing circRNA or lncRNA, obtaining a position feature vector of a splicing position sequence of each RNA sequence and a k-mer feature vector of RNA sequence k-mer information, respectively inputting the position feature vector and the k-mer feature vector into a position forest and a k-mer forest, respectively outputting a position category probability vector and a k-mer category probability vector, and determining the position category probability vector and the k-mer category probability ...

SAR and optical image fusion method and system

The invention discloses a method and a system for fusing an SAR (Synthetic Aperture Radar) and an optical image by coupling SPCNN (Space Pulse Coupled Neural Network) and phase consistency information. According to the method, the feature injection coefficient is obtained through the low-frequency coefficient, the specific features of the low-frequency coefficient of the SAR image are injected into the low-frequency coefficient of the optical image according to the feature injection coefficient, the fusion weight is obtained through the high-frequency coefficient, and the fused high-frequency coefficient is obtained according to the fusion weight. Based on a high-frequency coefficient fusion rule, fusing the high frequency of each wave band of the SAR image and the optical image, carrying out NSCT inverse transformation on a low-frequency coefficient and a high-frequency coefficient which are respectively fused by each wave band of the SAR image and the optical image to obtain a wave band ...

PANEL SUPPORT DEVICE AND X-RAY APPARATUS

A panel support device for detachably supporting an X-ray receiving panel includes a support plate configured to be in contact with the surface of the panel opposite to an X-ray receiving surface of the panel while the panel is mounted, a locking member for locking the panel on the support plate while the panel is mounted, and a drive device for driving the locking member so that the locking member is withdrawn from a locking position when the panel approaches the support plate and the locking member returns to the locking position when the panel comes in contact with the support plate in a process for mounting the panel.

Cast steel shot and manufacture method thereof

The invention relates to a cast steel shot and a manufacture thereof. The cast steel shot comprises the chemical compositions in percent by mass: 0.30-0.40% of C, 0.1-0.2% of Si, 0.5-0.65% of Mn, 1.0-1.2% of Cr, 0-0.01% of S, 0-0.01% of P, and the balance iron and unavoidable impurity. The manufacture technology comprises: preparing materials and melting, namely melting the prepared raw material compositions to form molten steel, pouring into a tundish, and employing a deoxidizer for deoxidization; forming a shot, namely, pouring deoxidized molten steel into a centrifugation disk rotating at a high speed, tossing out the pill under the centrifugal effect, dropping into a cooling pool, fishing out and baking to dry, so as to obtain a formed as-cast steel shot; and performing heat treatment, namely, heating the formed as-cast steel shot to 870-880 DEG C, keeping for 30-40 min, performing water-cooling quenching, performing tempering processing at 400-500 DEG C for 50-80 min, after tempering ...

Master-salve control system in rolling mill screw-down system

The invention relates to a master-salve control system in a rolling mill screw-down system. The master-salve control system mainly comprises a small valve and a big valve, wherein the small valve is the main valve, and the big valve is the secondary valve; the small valve is a small-flow high-precision electro-hydraulic servo valve, and connected with a screw-down cylinder by a first hydraulic control one-way valve; the small valve is provided with an electrical feedback and a spool displacement detection lead wire; the big valve is a big-flow medium-precision electro-hydraulic servo valve, and connected with the screw-down cylinder by a second hydraulic control one-way valve; the two hydraulic control one-way valves are controlled to be opened and closed by a solenoid directional control valve respectively; and a safety valve group is arranged between the small valve and the big valve and the screw-down cylinder. In the master-salve control system, the small valve ensures the precision ...

Clap acute diseases such as cholera and sunstroke hand

The utility model provides a clap acute diseases such as cholera and sunstroke hand characterized in that flat hand shape, handle and the five fingers are established as an organic wholely, and handle upper portion terminal surface is equipped with coniform massage head, and the treatment position is wide, convenient to use, and by replacing the staff, the problem of hand is hindered to the solve, and the treatment is laborsaving, do not hinder the treatment position, and treatment is good, but in the effect of treatment in -process oscillation generation and suction, these all are that the staff can not reach.

Preparation method and mold of permanent magnet ring

The invention relates to the technical field of manufacturing and processing of permanent magnet rings, and provides a preparation method and a mold of a permanent magnet ring. A set precursor is obtained, the section of the set precursor is not larger than that of the upper deformation pressing head, and the section of the upper deformation pressing head is smaller than that of an inner cavity of the outer mold; the deformation upper pressure head extrudes the set precursor to obtain a permanent magnet ring; the step of obtaining the set precursor comprises the substeps that a forming ring is installed in the outer mold and attached to the inner cavity, and the end face of the forming ring abuts against the end face of the lower pressing head. According to the preparation method of the permanent magnet ring, the section of the set precursor is not larger than the section of the deformation upper pressure head, so that in the deformation process, the deformation upper pressure head can ...

Building prefabricated part and manufacturing method and using method thereof

The invention relates to building materials, in particular to a building prefabricated part and a manufacturing method and using method thereof.The building prefabricated part comprises a concrete curing shell, a plurality of pouring pipes are arranged at the top of the concrete curing shell, the middle of the concrete curing shell is of a cavity structure, and reinforcing ribs are arranged in a cavity in the middle of the concrete curing shell; gaps of the reinforcing ribs are filled with concrete materials, and reserved detection parts are arranged in the middles of the reinforcing ribs and used for later performance detection of the building prefabricated parts. The two outwards-extending metal wires serve as conducting media and are poured in the building prefabricated part in advance, in the using process or after the building prefabricated part is manufactured, the overall bending degree of the reserved detection part can be integrally reflected by measuring the resistance change ...

Explosion -proof high -voltage inverter reactor regulating circuit

The utility model discloses an explosion -proof high -voltage inverter reactor regulating circuit, including exchanging reactance ware (1), vacuum contactor main contacts (2), vacuum contactor coil (3), converter control signal (4) and control source (5). This circuit can the explosion -proof high -voltage inverter of fast switch over interchange reactance ware induction reactance value, save maintenance time. This circuit is easily controlled, switch rapid, accurate, easily equipment, the reliability is high.

Method for cultivation of improved variety of rhodiola sachalinensis in low-altitude plain area

The invention belongs to the field of rhodiola sachalinensis cultivation and provides a method for cultivation of an improved variety of rhodiola sachalinensis in a low-altitude plain area. The method aims to solve the technical problems that in the process of cultivation of the rhodiola sachalinensis, root rot is prone to occurrence, the rate of emergence of seeds is low, and the yield is low. According to the method for cultivation of the improved variety of the rhodiola sachalinensis in the low-altitude plain area, a production cycle lasts for four years, a sowing plate is used for sowing, a bed surface is covered with pine needles and a mulching film, a shading net is erected on a bed, and weeding is conducted in time; in the next year, field planting is conducted, and organic compound fertilizer and farmyard manure which is processed through ferment bacteria are applied additionally; in the third year, after the seeds are harvested, stems and leaves above the ground are cut off, and ...

Method for painting colour codes on solid organic resistors and its dedicated apparatus and formulation

The present invention discloses a technology for painting colour codes on solid resistors, its dedicated equipment and the formula of paint, which can simplify the technological steps of production line by the cooperation of painting machine, colour code machine and paint. Its advantages are reducing cost and protecting environment and health of workers.

Epoxy and PVC composite flexible faced material and preparation method

The invention discloses a method for preparing an epoxy and polyvinyl chloride (PVC) composite flexible faced material, which comprises the following steps of: preparing an epoxy coating by weighing, baiting and stirring, uniformly coating the epoxy coating on the surface of glass fiber cloth of a PVC glass fiber composite coating through a coater, then baking for 15 to 20 minutes at the temperature of between 90 and 120 DEG C, and finally cooling, trimming and coiling to obtain the epoxy and PVC composite flexible faced material. Specific raw materials and proportion of the raw materials are adopted in the method; and the produced epoxy and PVC composite flexible faced material has excellent physical and chemical properties of epoxy resin such as abrasion resistance, scouring resistance, grease dirt resistance, ageing resistance, strong chemical resistance, strong adhesive force and the like. Because the PVC coating with good flexibility is used as a bottom material coating, flexibility ...

Detection method of concealed analeptic in shooting and archery competitive sports

The invention relates to a detection method of a concealed analeptic in shooting and archery competitive sports, in particular to a new use of the detection method by using vitamin B6 and/or folic acid, i.e. application thereof in analeptic detection in the shooting and archery competitive sports in Olympic Games and the like.

Architectural decoration detection structure

The invention discloses an architectural decoration detection structure which comprises a decoration part and a clamp, wherein the clamp is arranged on a universal mechanical test machine; the decoration part is connected with the clamp; the decoration part is also connected with a sensor of the universal mechanical test machine and located at the lower part of the sensor; the stress of the decoration part is detected through the upward or downward movement of the sensor; the sensor is arranged in the direction of the detected stress. According to the architectural decoration detection structure, the decoration part is connected with the clamp on the universal mechanical test machine, and the stress of the decoration part is detected through the upward or downward movement of the sensor, so that operators can determine whether the decoration part is qualified or not, and the later problems can be decreased.

Method for producing polyacrylate rubber by using waste plastic track powder

The invention discloses a method for producing polyacrylate rubber by using waste plastic runway powder, which comprises the following steps: firstly, crushing a waste plastic runway, and carrying out size screening; then the waste plastic track powder is pretreated to form a porous structure framework material; and finally, putting the prepared porous structure framework material into an acrylate monomer containing organic metal, adding a certain amount of initiator, and heating and polymerizing to obtain the elastic waste plastic runway powder modified polyacrylate rubber. The waste plastic track powder is pretreated to obtain the porous structure framework material, and the porous structure framework material has a large surface area; after reactive functional groups are introduced into the inner surface and the outer surface, reversible interaction with polyacrylate containing organic metal can be formed, and therefore the material has the repairable characteristic. Meanwhile, by adding ...

Fritillaria ussuriensis high-efficiency low-loss intelligent screening device based on rubbing mode

The invention discloses a rubbing mode-based fritillary bulb efficient low-loss intelligent screening device which comprises a screening box, a rubbing mechanism, a rack, a swing mechanism, a hydraulic electromechanical coupling control system and an image detection and recognition system, the rubbing mechanism is arranged on a movable sliding frame, and the rubbing mechanism comprises a hydraulic motor, a connecting flange, a clamping plate and a rubbing plate; an output shaft of the hydraulic motor is connected with a clamping plate through a connecting flange, a rubbing plate is arranged below the clamping plate, a screen box is arranged below a rubbing mechanism and is in linkage with a driving motor through a swing mechanism, the motor is fixed to a motor mounting plate, and a hydraulic electromechanical coupling control system is arranged below the motor mounting plate. And the image detection and recognition system is electrically connected with the hydraulic electromechanical coupling ...

Band selection device for femtosecond laser output by optical frequency comb

The invention relates to femtosecond laser band selection technology, in particular to a band selection device for femtosecond laser output by an optical frequency comb. The device solves the problems that the conventional femtosecond laser band selection technology has high cost and inflexible band selection and is easy to cause additional attenuation on the light intensity of the laser of the required band. The band selection device for the femtosecond laser output by the optical frequency comb comprises a polarizing beam-splitting prism, a reflection grating, a laser set, a double-side independent fine tuning grating, a fiber and a spectrometer. The device effectively solves the problems that the conventional femtosecond laser band selection technology has high cost and inflexible bandselection and is easy to cause additional attenuation on the light intensity of the laser of the required band. Narrow band femtosecond laser with precision of 1 nanometer can be acquired by adoptingthe ...

Dustproof and antistatic PC/ABS car lamp shell and preparation method thereof

The invention discloses a dustproof and antistatic PC/ABS (polycarbonate/acrylonitrile butadiene styrene) car lamp shell and a preparation method thereof. The car lamp shell is made of an antistatic PC/ABS alloy material. The antistatic PC/ABS alloy material is prepared from the following components in parts by weight: 60 to 80 parts of polycarbonate; 20 to 40 parts by weight of an acrylonitrile-butadiene-styrene copolymer; 5-20 parts by weight of an antistatic agent; 0.5 to 5 parts by weight of a compatibilizer; 0.3-1 part by weight of an antioxidant; 1-5 parts by weight of a lubricant; wherein the sum of the weight parts of the polycarbonate and the acrylonitrile-butadiene-styrene copolymer is 100 parts. The antistatic performance of the automobile lamp shell can be effectively improved on the premise of optimizing the cost and losing the minimum mechanical performance as far as possible, and the lasting time of the antistatic effect is prolonged.

LED lamp and an X-ray device and a collimator comprising the LED lamp

An embodiment of the present invention discloses a LED lamp as well as a X-Ray device and a collimator comprising the LED lamp. The LED lamp comprises a single LED chip serving as the light-emitting member of the LED lamp for emitting light beams; and a convex lens mounted in front of the LED chip for converging the light beams emitted from the LED chip. Embodiments of the invention can save power, reduce cost, and facilitate mass production and assembly.

Swing arm clamp type sleeve installing device

Thermal deformation magnet and preparation method thereof

The invention relates to the technical field of magnetic materials, in particular to a thermal deformation magnet and a preparation method thereof. The preparation method comprises the following steps: preparing amorphous or nanocrystalline magnetic powder into a precursor through hot pressing, then carrying out steel sleeve packaging and vacuumizing treatment on the precursor, then carrying out heat preservation treatment at 600-1000 DEG C, and then carrying out hot rolling; wherein the size of crystal grains in the precursor is smaller than 100 nanometers. The preparation method has the dual advantages of being beneficial to large-scale efficient production and easy to control the boundary dimension of the magnet. The manufacturing process is not limited by the vacuum degree and multi-step heating any more, the process is simple, energy consumption can be reduced, the cost can be reduced, the energy consumption and the cost are both lower than those of a hot pressing-thermal deformation ...

Aluminum-molybdenum-carbon alloy and preparation method thereof

The invention provides an aluminum-molybdenum-carbon alloy and a preparation method thereof, and relates to the technical field of metallurgy. The preparation method comprises the following steps: mixing molybdenum isocaprylate, normal hexane, ammonium molybdate and water, and solating to obtain sol; drying the sol to obtain a gel block; carrying out hydrogenation reduction on the gel block to obtain a reduced gel block; and crushing the reduced gel block, mixing the crushed reduced gel block with aluminum powder, and carrying out an aluminothermic reaction to obtain the aluminum-molybdenum-carbon alloy. A gel block material is prepared by adopting a sol-gel method, a reduced gel block is obtained through hydrogenation reduction, in the reduced gel block generated under the condition, carbon is in a low-crystallinity amorphous state, is uniformly dispersed with MoOx and is an excellent aluminothermic reaction raw material, and the uniformly dispersed aluminum-molybdenum-carbon alloy is ...

Device for rail web rust removal before I-shaped rail welding

The invention belongs to the technical field of railway engineering mechanical equipment manufacturing, and particularly relates to a device for rail web rust removal before I-shaped rail welding, which comprises a rust removal rack, a grinding wheel transmission mechanism, a grinding wheel adjusting mechanism, a steel rail sliding mechanism and a hand-held adjusting rod are arranged on the rust removal rack, and the grinding wheel transmission mechanism is connected with the grinding wheel adjusting mechanism. The steel rail sliding mechanism is in contact with the handheld adjusting rod; the grinding wheel transmission mechanism is used for driving the grinding wheels to rotate, the grinding wheel adjusting mechanism is used for adjusting the distance between the grinding wheels, and the steel rail sliding mechanism drives the whole structure to slide on the steel rail. The grinding wheels on the two sides are simultaneously driven by the single motor, the weight is light, and two persons ...

Method and system for evaluating in-furnace coke quality by using industrial CT (Computed Tomography)

The invention discloses a method and a system for evaluating the quality of coke entering a furnace by using industrial CT (Computed Tomography). The evaluation method comprises the following steps: selecting a plurality of coke blocks as samples to obtain coke samples A and B to be detected; respectively scanning the original coke sample A and the original coke sample B to be detected by adopting industrial CT (Computed Tomography) to obtain original crack and pore characterization values of the coke sample A and the coke sample B to be detected; respectively treating the treated to-be-tested coke samples A and B by adopting heat treatment and alkali metal erosion, and respectively scanning by adopting industrial CT (Computed Tomography) to obtain internal crack and pore characterization values of the to-be-tested coke samples A and B subjected to heat treatment and alkali metal erosion treatment; and processing the acquired characterization values of the internal cracks and the air holes ...

Detector supporting apparatus and an X-ray imaging device

A detector support device is described comprising a bracket, slide and detector trays, a connector and a cable. The connector comprises detector and cable interfaces, wherein the detector interface is installed on the detector tray to connect to the detector, and an accommodation cavity, in which the cable interface is located, is opened from an upper surface of the slide tray. A first fixing portion fixed to a bottom wall of the accommodation cavity and a first bending portion extending from the first fixing portion to a first end of the cable are also provided between the first end and a second end of the cable, the first end of the cable extends out of the slide tray so as to be connected to an external connector, and the second end of the cable is connected to the cable interface.

Large integral underground space waterproof construction structure and construction method thereof

The invention relates to a large integral underground space waterproof construction structure and a construction method thereof.The large integral underground space waterproof construction structure comprises a water stop steel plate, a plurality of welding spots are arranged on the inner side face of the water stop steel plate, the welding spots are electrically connected with conductive copper wires in an electric welding mode, welding spot protection bases are fixedly arranged outside the welding spots, and the welding spot protection bases play a role in protecting the welding spots; the welding spot protection base is sleeved with a copper wire protection tube, one end of the copper wire protection tube is connected with the welding spot protection base in an inserted mode, the copper wire protection tube plays a role in protecting and leading out a copper wire, and the copper wire protection tube penetrates through the inner side face wall body to lead out the copper wire. The welding ...

Polymeric anti-aging multifunctional additive as well as preparation method and application thereof

The invention discloses a high-molecular polymer as well as a preparation method and application thereof, the high-molecular polymer contains hydrophilic groups-C (= O)-OH or-C (= O)-ONa or-C (= O)-OK, so that the hydrophilicity of the high-molecular polymer in water-based coatings, paints, inks and adhesives when the high-molecular polymer is used as an additive can be improved; the high-molecular polymer can effectively improve the dispersing performance of a water-based product, and meanwhile, the high-molecular polymer also contains a piperidine group with anti-aging performance, so that the weather resistance of the product can be effectively improved. Besides, the high-molecular polymer provided by the invention contains carboxylate ions, due to the influence of isotropic electrostatic repulsion, a molecular chain extends from a spiral shape to a rod shape, so that the viscosity of a water phase is improved, in addition, the high-molecular polymer forms a net-shaped structure through ...

Lanthanum doped nano barium ferrite film and method of manufacturing the same

The invention relates to a lanthanum doping nanometer barium ferrite thin film and a preparation method thereof, which is technically characterized in that the prescription is as follows: 1.48 g/100 ml to 1.60 g/100 ml of glycol, 2.51 g/100 ml to 2.71 g/100 ml of citric acid, 1.74 g/100 ml of iron nitrate, 0.125 g/100 ml of barium nitrate and 0.03 g/100 ml to 0.125 g/100 ml lanthanum nitrate. The preparation method is that the iron nitrate, the barium nitrate, the lanthanum nitrate, and the like, serve as raw materials to prepare a forerunner body the forerunner body of the lanthanum doping nanometer barium ferrite in a sol-gel method; sol-gel method; clean silicon dioxide serves as a support base, the iron nitrate, the barium nitrate and the lanthanum nitrate serve as main salt, the citric acid serves as complexing agent, the glycol serves as complexing agent assist, and the soakage-drawing method is adopted to make the film. The method has the advantages of simple process flow and low ...

Method for handling organic wastewater based on Fenton reaction

The invention discloses a method for handling organic wastewater based on Fenton reaction, comprising the following steps of: (1) high-voltage pulse electric coagulating reaction: regulating the pH value of wastewater to be 3-4 so that wastewater performs high-voltage pulse electric coagulating reaction in a high-voltage pulse electric coagulating device at the current intensity of 1-30A, whereinthe electric coagulating reaction time ranges from 30-120min, the high-voltage pulse electric coagulating device is input by the 100-400V alternating current which is then converted into direct current after rectification, the pulse voltage of 80V to 350V is formed by utilizing a pulse generator, the anode and cathode plates adopted by the high-voltage pulse electric coagulating device are iron plates with the carbon content above 0.45wt% and the space between the polar plates ranges from 10-30mm; (2) Fenton reaction; and (3) concrete precipitation reaction. Compared with the prior art, the invention ...

Apron with over -sleeves

The utility model provides an apron with over -sleeves, including apron body, frenulum and oversleeve, apron body, constitute the frenulum by cotton yarn layer, the fine layer of glass and silica gelcoating in proper order from the inside external half: a U jacket head frenulum is located apron body upper end, a pair of waist frenulum is located apron body both sides respectively, the oversleeve,symmetrical fixed connection is in apron body both sides upper end, and on folding outside the apron body, the below inclines in both sides are to the apron body respectively, and its terminal detachably connects on the apron body. The utility model has the advantages of, when not using the oversleeve, the oversleeve with regard to fixed mounting on the apron body, when using the oversleeve, withthe oversleeve sell mouthful from an apron body separate can, convenient and practical relatively.

Rapid detection method for copper content

The invention discloses a rapid detection method for copper content. The method comprises the following steps: a pre-treatment step: a step of preparing a to-be-detected aqueous solution from a to-be-detected sample, adding a masking agent into the prepared to-be-detected aqueous solution and carrying out treatment; a detection step: a step of adding a sodium diethyldithiocarbamate solution into the aqueous solution treated by the masking agent so as to realize color development; and a determination step: a step of comparing the color of the color-developed solution with the color of a developing solution of a standard solution containing copper so as to obtain the concentration of copper in the to-be-detected aqueous solution. With the method in the invention, the content of copper in the to-be-detected aqueous solution can be rapidly detected; operation is simple and convenient; extraction is not needed; and pollution and toxicity of an organic extraction solvent can be reduced.

Vibration acquisition member and manufacturing method thereof, sensor and manufacturing method thereof, and wearable device

The invention provides a vibration acquisition piece and a manufacturing method thereof, a sensor and a manufacturing method thereof, and an intelligent wearable device, the vibration acquisition piece comprises a connecting piece, a vibrating diaphragm and a curing adhesive layer for bonding the connecting piece and the vibrating diaphragm, a middle cavity is formed between the connecting piece and the vibrating diaphragm, and a through hole communicated with the middle cavity is formed in the connecting piece; and the connecting piece and the diaphragm curing adhesive layer are hot-pressed to form an integrated structure. The vibrating diaphragm and the connecting piece are manufactured into a whole, namely the vibration acquisition piece, through the curing adhesive layer, and the vibration acquisition piece can be directly adhered to the substrate in the subsequent sensor manufacturing process. The vibration acquisition piece is manufactured by adopting hot press molding, the process ...

Method for toughening polylactic acid by using waste polyurethane plastic track powder

The invention discloses a method for toughening polylactic acid by using waste polyurethane plastic runway powder, which comprises the following steps: firstly, crushing a waste polyurethane plastic runway, and carrying out size screening; then, the screened polyurethane powder is pretreated to be used as a toughening agent; finally, the pretreated polyurethane powder and polylactic acid are subjected to melt blending according to a certain proportion, and the toughened polylactic acid material is obtained. According to the invention, the waste polyurethane powder is pretreated, so that the compatibility and interfacial interaction between the waste polyurethane powder and the polylactic acid are increased, and the mechanical properties, especially the elongation at break and notch impact strength, of the polylactic acid composite material are obviously improved; meanwhile, waste polyurethane plastic track powder is selected, waste is turned into wealth, and resource reutilization is achieved ...

Nano hydrocarbon explosive as well as preparation method and application thereof

The invention provides a nano hydrocarbon explosive as well as a preparation method and application thereof. The nano hydrocarbon explosive provided by the invention is prepared from the following components in percentage by mass: 10 to 15 percent of nano hydrocarbon fuel and 85 to 90 percent of ammonium nitrate. According to the nano hydrocarbon explosive provided by the invention, the nano hydrocarbon fuel is used for replacing diesel oil as a raw material, so that the cost is reduced, the selection range of raw materials of industrial explosives is widened, the dependence of the industrial explosives on petroleum-based fuel is broken, the blasting performance is improved, and the concept that a traditional ammonium nitrate fuel oil explosive cannot contain water is overturned; the variety of industrial explosives in China is enriched, and more choices are provided for engineering blasting design and use. In addition, the nano hydrocarbon explosive provided by the invention is low in ...

Specific siRNA (small interfering Ribonucleic Acid) of YTHDF2 containing free triphosphate group and application of specific siRNA

The invention provides a YTHDF2 specific siRNA containing free triphosphate groups and application thereof. The siRNA can realize multiple anti-tumor functions through one molecule: firstly, the siRNA has a specific gene silencing function on tumor progress promoting molecule YTHDF2; secondly, the double-stranded RNA molecule containing the triphosphate group can activate an RIG-I signal channel to promote anti-tumor immune response; thirdly, the degradation of the RIG-I by the YTHDF2 is also inhibited by the siRNA molecule, so that the organism has enough RIG-I receptors to participate in the immune response of the organism. The YTHDF2 specific siRNA containing the free triphosphate group has a very remarkable anti-tumor advantage, and the molecular toxicity of the small molecule is not observed at present. Therefore, the siRNA provided by the invention has a good application prospect in the aspect of preparing a medicine preparation for treating tumors, especially preparing a medicine ...

Universal positioning system for x-ray imaging system

The invention discloses an X-ray system with a universal positioning system, and the system comprises a multi-degree-of-freedom overhead supporting system which is disposed in a position of the X-ray system; the first imaging equipment is located on the overhead supporting system; a multi-degree-of-freedom ledge disposed within the location of the X-ray system, the ledge comprising a power module and a plurality of movable members operably connected to the power module, the plurality of movable members being operable by the power module to move the ledge over the floor at the location; a second image forming apparatus mounted to the ledge; a stage disposed within the location of the X-ray system, the stage including a base disposed on a floor of the location and a support surface fixed to the base at one end; and a workstation comprising a processing unit configured to send a control signal to and receive a data signal from the universal positioning system.

Multi-constraint visual layout analysis method and device for aerospace launching site facilities

The invention discloses a spaceflight launching site facility multi-constraint visual layout analysis method and a spaceflight launching site facility multi-constraint visual layout analysis device. The method comprises the following steps: setting spatial constraints of single facilities on a three-dimensional visual interface; road constraint is carried out on road network design on the three-dimensional visual interface through a transfer process of single facility construction; and performing visual representation and calculation on the three-dimensional visual interface according to the spatial constraint and the road constraint, and optimizing the facility layout of the spaceflight launch site. A planner can more visually check various constraint relations among facilities in the spaceflight launching site, and the planner is helped to plan and design the facilities in the spaceflight launching site.

Spherical sectional feed flow regulating valve

Method for measuring contents of manganese, copper and oxides in directly reduced iron

The invention provides a method for measuring contents of calcium oxide, magnesium oxide, potassium oxide, sodium oxide, manganese and copper in directly reduced iron. An absorbance value of a sample solution is measured by using a conventional flame atomic absorption spectrometry method, and corresponding contents of calcium oxide, magnesium oxide, potassium oxide, sodium oxide, manganese and copper are obtained according to the absorbance value in a standard working curve of calcium oxide, magnesium oxide, potassium oxide, sodium oxide, manganese and copper. The method is characterized by comprising the steps of: adding hydrochloric acid in a sample, adding mixed acid of nitric acid and hydrofluoric acid, adding perchloric acid for dissolving, adding diluted hydrochloric acid for dissolving salts, and filtering a dissolution solution to prepare the sample solution. The method is convenient for operation, and has high accuracy rate of measured contents of calcium oxide, magnesium oxide ...

Electric field generation device

The invention discloses an electric field generation device. The electric field generation device comprises a direct current power source, an MARX generator, a transformer, a main control unit, a signal amplification unit, a voltage direction conversion unit and a plate electrode device, wherein the main control unit is connected with the signal amplification unit; the signal amplification unit is connected with the MARX generator so as to carry out time sequential control over charging and discharging of the MARX generator; the signal amplification unit is connected with the voltage direction conversion unit; the input end of the voltage direction conversion unit is connected with the MARX generator, and the output end of the voltage direction conversion unit is connected with the transformer so as to convert the voltage direction of voltage output by the MARX generator and carry out boosting through the transformer; the plate electrode device is connected with the output end of the transformer ...

Design of novel logarithmic spiral profile key-free joint hole

Traditional mechanical joint adopts key or semi-key joint, stress concentration is generated due to abrupt changes and sharp corners of the section of the contact surface, strength of a shaft neck and a hub is weakened to some extent, accurate centering of the hub cannot be achieved, the center of mass deviates from an axis of rotation, then vibration is generated, conquassation slippage deformation happens to a key groove, and the key groove cannot be used any more. A logarithmic spiral profile joint curve has no sharp edges and concave positions, therefore, compared with a key or a spline, stress concentration is eliminated, and service life of a shaft and the hub is prolonged. The logarithmic spiral profile key-free joint hole: sigma= alpha e, wherein m=0.0524. The contact stress of the logarithmic spiral profile key-free joint is 2.2 times smaller than that of the semi-key joint, the shape of the matching surface is simple, and assembly and disassembly are convenient. A P3000 ...

Antistatic PBT (polybutylene terephthalate) composite material as well as preparation method and application thereof

The invention relates to the technical field of high polymer materials, in particular to an antistatic PBT (Polybutylene Terephthalate) composite material as well as a preparation method and application thereof, and the antistatic PBT composite material comprises the following components in parts by mass: 70-100 parts of polybutylene terephthalate; 0-30 parts by mass of glass fiber; 5-15 parts by mass of an antistatic agent; 0-10 parts by mass of a toughening agent; 0.5-5 parts by mass of a compatibilizer; 0.1-1 part by mass of an antioxidant; 0.5-5 parts by mass of a lubricant; wherein the antistatic agent is a polymer permanent antistatic agent and comprises one or a combination of more of polyethylene oxide, polyether ester amide, polyether amide imine and sodium polystyrenesulfonate. The antistatic PBT composite material provided by the invention improves the antistatic performance of a car lamp bracket, solves the problem of floating dust adhesion of a lens and a circuit board in a ...

Information processing method, signal positioning method, device, equipment and medium

The invention relates to an information processing method and device, a signal positioning method and device, equipment and a medium. The method comprises the following steps: firstly, carrying out time domain transformation on a plurality of pieces of channel state information of a target channel to correspondingly obtain a plurality of pieces of initial channel pulse response information, then carrying out normalization processing on influence parameters of the initial channel pulse response information, and finally, carrying out denoising processing on the initial channel pulse response information subjected to the normalization processing to obtain a de-noised channel pulse response information. And obtaining multiple pieces of target channel pulse response information. Wherein the influence parameter represents a parameter influencing the stability of the channel state information. By adopting the method, stable and effective signal state information is obtained, and the position information ...

Pseudomonas fluorescens KY-03 and application thereof

The invention provides pseudomonas fluorescens KY-03. The preservation number is CGMCC No.8525. The pseudomonas fluorescens KY-03 provided by the invention has the beneficial effect that on the basis of no influence on the stability of an anaerobic digestion reaction system, the efficiency of anaerobic methane generation and the decomposition rate of organic matters in sludge can be obviously increased; compared with the chemical method, the pseudomonas fluorescens KY-03 provided by the invention has the advantages of low cost, long duration time, no secondary pollution and the like, is convenient in culture and use, can make positive contribution to further promotion and popularization of the industrial-wastewater biological treatment technology, especially the anaerobic digestion technology, and has wide application prospect in the field of sewage treatment.

Sealed feed flow controlling box on top of blast furnace

A sealed material stream control box on the top of blast furnace features that a turn-over lifting structure is used to replace the fixed-axle turn-over structure of air-tight valve, the valve flap is turned over the then lifted by the shaped cranke and lever, and the dual-side driven trunnion structure of flap valve is improved as single-side automatically synchronous reverse drive mechanism. Its advnatages are small size, correct location and low cost.

Pen container

The utility model discloses a pen container, including the pen container body, characterized by: still including the fixed socket subassembly that sets up in pen container body lower part, be equipped with AC -DC dirver circuit board in the socket subassembly, be equipped with power plug and the USB interface pen container body on the socket subassembly and pass through the matched with socket with the socket subassembly and link. The socket subassembly is equipped with a USB interface at least, and AC -DC dirver circuit board and power plug and USB electrical connection interface. The utility model discloses simple structure can put USB formula wiring board together very conveniently with pen container, save the working space, as long as the while user carries the USB connecting wire can charge to digital product, has alleviateed user's burden.

FRP pipe section of thick bamboo lateral wall inlet outlet

The utility model discloses a FRP pipe section of thick bamboo lateral wall inlet outlet belongs to FRP pipe section of thick bamboo technical field. Its main technical scheme, sets up in wherein side mouth and the side fuseplug mother on being fixed in this side mouthful at fixed orifices including the FRP pipe section of thick bamboo lateral wall on, the bobbin lateral wall of fixed orifices with the correspondence of side mouth be the outer shape horn mouth structure of opening. This FRP pipe section of thick bamboo lateral wall inlet outlet effectively overcomes glass fiber's damaged off -plate dew to has better sealed effect. (B /) ...

Unmanned aerial vehicle cruise pipeline hidden danger analysis method, device and system

The invention provides an unmanned aerial vehicle cruise pipeline hidden danger analysis method, device and system. The method comprises the steps that pre-generated route information is acquired, and the route information comprises the route and flight parameter information of the unmanned aerial vehicle; the route comprises a plurality of waypoints, and the waypoints are determined based on a three-dimensional point cloud model of a target aviation oil pipeline inspection area; performing automatic inspection by using the unmanned aerial vehicle according to the route information to obtain an inspection video of the target aviation oil pipeline; inputting each image in the patrol video into the hidden danger analysis model one by one to output a hidden danger analysis result of each image; the hidden danger analysis result comprises hidden danger categories and hidden danger positions, and the hidden danger categories comprise building categories, construction site categories and construction ...

X-ray irradiator and X-ray imaging apparatus

With a view to providing an X-ray irradiator superior in workability in mounting a collimator box to an X-ray tube, the X-ray irradiator includes: a ring provided on an entry plate of the collimator box so as to surround an X-ray incidence window, the ring receiving therein a flange of the X-ray tube and having plural slots formed radially through the ring; plural tongue pieces inserted through the slots from outside to inside of the ring and holding down the back side of the flange; and a pair of half-rings which holds the plural tongue pieces at positions outside the ring and which, when one ends and opposite ends thereof are respectively opposed to each other, surrounds the ring with the plural tongue pieces inserted respectively into the plural slots.

Intermediate waste water treatment method of quinacridone pigment and modified macroporous absorbent resin used by method

The invention relates to an intermediate waste water treatment method of quinacridone pigment and modified macroporous absorbent resin used by the method. The treatment method comprises the following steps: firstly, removing solid substances in the waste water by waste water acid separation precipitation; then, using the modified macroporous absorbent resin for absorption so that quinacridone pigment intermediate products in the waste water can be absorbed on the resin; further carrying out biochemical and physicochemical treatment on the absorption outlet water for reaching the national second grade discharge standard. The modified macroporous absorbent resin is desorbed and regenerated through thermokalite desorption liquid, and then, the modified macroporous absorbent resin can be reused after being flushed by clean water. In the desorption regeneration process, the produced high-concentration desorption liquid is used for recovering the pigment intermediate products through acid separation ...

Pressure loss preventor for water-sealed airtight tank in furnace roof chute-type distributor

Heavy wheel cast bottom mold making core supporting disc, device and process

The invention discloses a heavy wheel cast bottom mold making core supporting disc, a heavy wheel cast bottom mold making device and a heavy wheel cast bottom mold making process. The core supporting disc comprises a lifting rod body and a disc body, which are perpendicular to each other, wherein the lifting rod body is a cone with a thin top and thick bottom; the lower end of the lifting rod body is connected with the middle part of the disc body into a whole; and the upper part of the lifting rod body is provided with a transverse through hole. The device has a sand box, a bottom basin, a mold frame, a mold lifting plate and the core supporting disc, wherein a deboss matched with the disc body is formed in the middle of the inside surface of the bottom part of the bottom basin; the disc body is arranged in the deboss; and the upper part of the cylindrical surface of the sand box is provided with two opposite notches which are as high as the through hole in the upper part of the lifting ...

Epoxy terrace material and preparation method thereof

The invention discloses an epoxy terrace materials consisting of a polyurethane leather layer, a fibre glass cloth layer which is mutually bonded with the polyurethane leather layer, and a terrace coating layer formed by coating and distributing the terrace paint on the surface of the fibre glass cloth layer. The terrace material not only inherits the excellent physicochemical properties of epoxy resin, such as wear resistance, scouring resistance, oil stain resistance, aging resistance, strong chemical resistance, extremely strong adhesive force and other characteristics. By adopting fibre glass as the material skeleton, the epoxy terrace material further strengthens the impact resistance and tensile strength, and belongs to the high-strength composite material; and compared with the traditional coating materials, the epoxy terrace material is more durable, has longer service life, and easier installation and construction.

Can accomodate into scarf of handbag

The utility model provides a can accomodate into scarf of handbag, including scarf body, scarf body is rectangular form, and the side of its one end is fixed with a pocket, openings of the pockets hasthe open -ended of spaning and carries the rope, and have a button hole on this pocket towards the scarf other end on its opening, have before openings of the pockets one with the first button of pocket antarafacial installation. The utility model has the advantages of, when accomodating this scarf, curl up scarf body's the other end towards openings of the pockets, until rolling up the scarf tothe openings of the pockets in, this moment first button with the button hole to it, can fix the scarf in the pocket, utilize and carry the rope just as taking the handbag equally light by on hand with the scarf.

Roll shifting device driven through intermediate rolls

The invention relates to a roll shifting device driven through intermediate rolls. The positions of work roll fixing and bending blocks on the two sides of each work roll are provided with horizontally-moving adjusting devices in the horizontal direction respectively. Each horizontal-moving adjusting device reversely moves according to the horizontal eccentric distance between the center line of the corresponding work roll and the center line of a machine frame, and therefore the center line of the work roll and the center line of the machine frame can be located on the same vertical plane. Two push-and-pull oil cylinders above intermediate roll bending and shifting devices are distributed on the left side and the right side of the intermediate rolls and fixed to the machine frame. The heads of the push-and-pull oil cylinder pistons are respectively connected with a push-and-pull head, the horizontal sections of the push-and-pull heads are in a T shape, and the push-and-pull heads are embedded ...

A safety device and X -ray production apparatus for beam -defining clipper of X -ray production apparatus

The utility model relates to a safety device and X -ray production apparatus for beam -defining clipper of X -ray production apparatus. The X -ray production apparatus includes the bulb flange, and this safety device includes: the loop forming element, its cover is on the bulb flange, and the connecting piece, it extends on the loop forming element, can be connected with the beam -defining clipper.

Shielding device for radioactive sample neutron residual stress measurement

The invention relates to a shielding device for radioactive sample neutron residual stress measurement. The shielding device for the radioactive sample neutron residual stress measurement comprises a device main body (1), the device main body (1) is of a three-layer box-type combined structure, and a middle box (2) is internally provided with a hollow area (3) used for containing a sample clamping device body (4); an incidence pore channel (5), an emergent pore channel (6) and a diffraction pore channel (7) are formed in the side wall of the middle box (2), and the incidence pore channel (5), the emergent pore channel (6) and the diffraction pore channel (7) are all communicated with the hollow area (3). The shielding device for the radioactive sample neutron residual stress measurement not only meets the measurement of radioactive sample three-dimensional lossless depth residual stress but also meets the safety requirement on radioactive sample radiation shielding, and the convenience ...

Manual heating cup

The utility model relates to a cup utensil, specifically speaking is a manual heating cup, mainly by circular cup, cup along bayonet socket support, the friction disk, the rocker, the handle pivot, the square pole, the sealing ring is constituteed. Use the utility model discloses the time, with the cup along the bayonet socket support through the shape of a saddle bayonet socket card on it the cup along last, pass the support centre bore with the square pole and insert on corresponding square hole. Because it is similar with the square pole cross sectional shape to correspond square hole, the size slightly is greater than the square pole cross -section, so when the square pole was rotatory, it was rotatory together to drive the friction disk. With handheld handle pivot, the rocker rotates, and square pole and friction disk are rotatory together. Rotatory in -process of friction disk and friction surface intracavity wall friction themogenesis. Thereby pass through the liquid in the conduction ...

AUTO GRID MOVING DEVICE FOR DIAGNOSTIC X RAY TABLE

An auto grid moving apparatus for an X ray imaging device is provided. The apparatus includes: a grid; a grid holder on which the grid is disposed; a fixing base; and a double sided timing belt geared with at least two timing wheels at the two ends of the timing belt on the inner side face of the timing belt and geared with the grid holder at the outer side face of the timing belt, wherein one of the timing wheels has a motor disposed thereon, the motor being configured to drive the timing wheel to move the timing belt and to drive the grid holder to move. 1. An auto grid moving apparatus for an X ray imaging device , the apparatus comprising:a grid;a grid holder on which the grid is disposed;a fixing base; anda double sided timing belt geared with at least two timing wheels at the two ends of the timing belt on the inner side face of the timing belt and geared with the grid holder at the outer side face of the timing belt,wherein one of the timing wheels has a motor disposed thereon, the motor being configured to drive the timing wheel to move the timing belt and to drive the grid holder to move.2. The auto grid moving apparatus for X ray imaging device according to claim 1 , further comprising a guide rail mounted adjacent to the double sided timing belt and fixed on the base of the auto grid moving apparatus claim 1 , the guide rail being configured to constrain movement of the grid holder.3. The auto grid moving apparatus for X ray imaging device according to claim 1 , further comprising semi-circular timing wheels fixed on the grid holder claim 1 , wherein the outer side face of the timing belt is geared with the grid holder through the semi-circular timing wheels.4. The auto grid moving apparatus for X ray imaging device according to claim 3 , comprising three semi-circular timing wheels fixed at left claim 3 , central and right sides of the grid holder respectively.5. The auto grid moving apparatus for X ray imaging device according to claim 4 , wherein the ...

Two-step diffusion method for preparing high-performance dual-main-phase sintered mischmetal-iron-boron magnet

A two-step diffusion method for preparing high-performance dual-main-phase sintered mischmetal-iron-boron magnet belongs to the preparing technical field of rare earth permanent magnet materials. The compositions of the two main phase alloys are RE-Fe—B (RE is Nd or Pr) and (Nd, MM)-Fe—B (MM is mischmetal), respectively. First, PrHoFe strip-casting alloy is used as a diffusion source. Next, a PrHo-rich layer is uniformly coated on the surface of (Nd, MM)-Fe—B hydrogen decrepitation powders. The higher anisotropic fields of PrFeB and HoFeB are used to improve the coercivity. Then, the ZrCu strip-casting alloy is used as a diffusion source. A Zr-rich layer is uniformly coated on the surface of the powders after the first-step diffusion, which prevents the growth of the MM-rich main phase grains during the sintering process and the inter-diffusion between the two main phases, thus obtains high coercivity. 1. A two-step diffusion method for preparing high-performance dual-main-phase sintered mischmetal-iron-boron magnet , wherein the high-performance dual-main-phase sintered mischmetal-iron-boron magnet comprises a Pr/NdFeB main phase A and a (E , Nd)FeB main phase B , hydrogen decrepitation coarse powders of the main phase B is subjected to two-step rotating diffusion treatment , then mixed with hydrogen decrepitation coarse powders of the main phase A , a mass ratio of the main phase A to the main phase B is 1:9-5:5 with the sum being 10;{'sub': x', '100-x-y-z', 'y', 'z', 'a', '1-a', 'x', '100-x-y-z', 'y', 'z, 'wherein nominal composition of the main phase A is Pr/NdFeMB(wt. %), and nominal composition of the main phase B is [ENd]FeMB(wt. %), where E is mischmetal, and mass percent of each component is Ce: 48-58%, La: 20-30%, Pr: 4-6%, and Nd: 15-17%; M is one or more of Nb, Ti, V, Co, Cr, Mn, Ni, Zr, Ga, Ag, Ta, Al, Au, Pb, Cu, Si, x, x1, y, z satisfies the following relationships: 0≤a≤1, 25≤x≤35, 0.5≤y≤3, 0.3≤z≤1.5;'}the two-step diffusion method comprising the ...

Detector supporting apparatus and an x-ray imaging device

A detector support device is described comprising a bracket, slide and detector trays, a connector and a cable. The connector comprises detector and cable interfaces, wherein the detector interface is installed on the detector tray to connect to the detector, and an accommodation cavity, in which the cable interface is located, is opened from an upper surface of the slide tray. A first fixing portion fixed to a bottom wall of the accommodation cavity and a first bending portion extending from the first fixing portion to a first end of the cable are also provided between the first end and a second end of the cable, the first end of the cable extends out of the slide tray so as to be connected to an external connector, and the second end of the cable is connected to the cable interface.

SYSTEMS AND METHODS FOR VEHICLE MANAGEMENT

The present disclosure relates to an electronic device configured to send a service request of a service to a remote server; receive an authority from the remote server; and control, according to the authority, an on-board device mounted on a target vehicle that is assigned by the remote server to provide the service to a user associated with the electronic device. 1. An electronic mobile device configured to control an on-board device of a vehicle , comprising:at least one storage medium including a set of instructions for controlling an on-board device of a vehicle; and send electronic signals including a service request of a service to a remote server;', 'receive electronic signals including an authority from the remote server; and', 'control, according to the authority, an on-board device mounted on a target vehicle that is assigned by the remote server to provide the service to a user associated with the electronic mobile device., 'logic circuits configured to communicate with the at least one storage medium, wherein when executing the set of instructions, the logic circuits are directed to2. The electronic mobile device according to claim 1 , wherein the logic circuits are further directed to:directly instruct the on-board device to perform a predetermined operation according to the authority.3. The electronic mobile device according to claim 1 , wherein the logic circuits are further directed to:send electronic signals including an instruction to the remote server according to the authority to render the remote server to direct the on-board device to perform a predetermined operation.4. The electronic mobile device according to claim 1 , wherein the service is an online transportation service provided by the target vehicle; andthe user is a passenger of the target vehicle.5. The electronic mobile device according to claim 1 , wherein the logic circuits are further directed to receive electronic signals including a confirmation claim 1 , from the remote server ...

SYSTEMS AND METHODS FOR VEHICLE MANAGEMENT

The present disclosure relates to an electronic device configured to send a service request of a service to a remote server; receive an authority from the remote server; and control, according to the authority, an on-board device mounted on a target vehicle that is assigned by the remote server to provide the service to a user associated with the electronic device. 1. An electronic device configured to manage a vehicle , comprising:a state detection module configured to be on-board connected to a vehicle bus of the vehicle, wherein during operation the state detection module obtains a state of the vehicle through the vehicle bus, and independently sends the state of the vehicle to a server remote to the vehicle; anda tracking module, wherein during operation the tracking module tracks a location of the vehicle, and independently sends the location to the server.2. The electronic device according to claim 1 , further comprising:an event data recorder, wherein during operation, the event data recorder records internal and external environmental information of the vehicle, and independently sends the internal and external environmental information to the server.3. The electronic device according to claim 1 , wherein the tracking module is electronically integrated with the state detection module.4. The electronic device according to claim 2 , wherein when an abnormal operation occurs to at least one of the tracking module claim 2 , the state detection module claim 2 , or the event data recorder claim 2 , one or more of remainder of the tracking module claim 2 , the state detection module claim 2 , and the event data recorder are triggered to send an alert to the server.5. The electronic device according to claim 2 , wherein the tracking module claim 2 , the state detection module claim 2 , and the event data recorder are configured to communicate with each other claim 2 , andabsent of connection with the server, when an abnormal operation occurs to any one of the ...

Neural network-based error compensation method, system and device for 3d printing

A neural network-based error compensation method for 3D printing includes: compensating an input model by a deformation network/inverse deformation network constructed and trained according to a 3D printing deformation function/inverse deformation function, and performing the 3D printing based on the compensated model. Training samples of the deformation network/inverse deformation network include to-be-printed model samples and printed model samples. The deformation network constructed according to the 3D printing deformation function is marked as a first network. During training of the first network, the to-be-printed model samples are used as real input models, and the printed model samples are used as real output models. The inverse deformation network constructed according to the 3D printing inverse deformation function is marked as a second network. During training of the second network, the printed model samples are used as real input models, and the to-be-printed model samples are used as real output models.

SYSTEMS AND METHODS FOR VEHICLE MANAGEMENT

The present disclosure relates to an electronic device communicatively connected to a vehicle. The electronic device includes a network interface configured to receive information associated with the vehicle, and at least one processor. The processor is configured to detect a vehicle status based on the information and the vehicle status is indicative of a predetermined condition. The processor is further configured to receive an authorization for controlling the vehicle and take control, upon detecting the vehicle status and receiving the authorization, from a default controller of the vehicle. 1. An electronic device communicatively connected to a vehicle , comprising:a network interface configured to receive information associated with the vehicle; and detect a vehicle status based on the information, the vehicle status indicative of a predetermined condition;', 'receive an authorization for controlling the vehicle; and', 'take control, upon detecting the vehicle status and receiving the authorization, from a default controller of the vehicle., 'at least one processor configured to2. The electronic device according to claim 1 , wherein the at least one processor is further configured to:instruct an on-board device to perform a predetermined operation of the vehicle according to the authorization.3. The electronic device according to claim 2 , wherein the predetermined operation includes at least one of a turning on operation or a turning off operation.4. The electronic device according to claim 1 , wherein the information is acquired by at least one on-board device of the vehicle.5. The electronic device according to claim 1 , wherein the authorization assigns the electronic device with a higher control priority over the default controller.6. The electronic device according to claim 1 , wherein the vehicle is assigned to provide an online on-demand transportation service to a passenger.7. The electronic device according to claim 1 , wherein the predetermined ...

COLLISION AVOIDANCE SYSTEM AND COLLISION AVOIDANCE METHOD FOR DETECTION BED

A collision avoidance system and collision avoidance method for a detection bed are described. The collision avoidance system comprises stress sensors for measuring a stress caused by supporting a bed face of the detection bed and outputting stress data; a collector, which is connected with the stress sensors and is configured to collect the stress data output by each of the stress sensors; a judging processor, which is connected with the collector and is configured to judge whether the collected stress data monotonically changes within a preset time; and a controller connected with the judging processor, the controller controlling the bed face of the detection bed so that it stops moving when the judging processor determines that the collected stress data monotonically changes within the preset time. 110.-. (canceled)11. A collision avoidance system for a detection bed comprising a bed face , the system comprising:stress sensors configured to measure a stress caused by supporting the bed face of the detection bed with and/or without a load on the bed face and outputting corresponding stress data;a collector in communication with the stress sensors and is configured to collect the stress data output by each of the stress sensors;a judging processor in communication with the collector and configured to determine whether the collected stress data monotonically changes within a preset time; anda controller in communication with the judging processor, the controller configured to control the bed face of the detection bed so that the bed face stops moving when the judging processor determines that the collected stress data monotonically changes within the preset time.12. The collision avoidance system of claim 11 , wherein the judging processor is further configured to determine whether a rate at which the collected stress data monotonically changes within the preset time reaches a preset value claim 11 , and the controller is configured to control the bed face of the ...

Filter and X-ray imaging device

In order to realize a filter that can make a fine spectrum adjustment in a wide rage and can be miniaturized, and to realize an X-ray imaging apparatus provided with the filter, a filter of the present invention is provided with plural filter plates that can form a layer crossing X-ray and adjusting means that adjusts a combination of filter plates forming the layer by individually moving the plural filter plates so as to come in and out the X-ray passing space. The plural filter plates are formed such that the thickness of each filter plate is successively doubled with the thinnest filter plate defined as a reference. The adjusting means has a pair of moving in/out mechanisms for moving, every its half number, the plural filter plates in and out from both sides of the X-ray passing space.

One-dimensional optical lattice production device and method with calibration function

The production device includes a laser incident unit, a scientific chamber, a reflection unit, and a light path coincidence calibration unit detachably arranged. The light path coincidence calibration unit includes: a fourth polarizing beam splitter, a fourth half-wave plate and a fifth half-wave plate sequentially arranged on a laser path of the laser incident unit; and an optical power probe arranged on the reflection path of the fourth polarizing beam splitter. The fourth half-wave plate and the fifth half-wave plate are adjusted so that the light is reflected when passing through the fourth polarizing beam splitter. The optical power probe can receive the reflected light, the angle of the reflected light can be changed by adjusting the reflection unit; the angle change of the reflected light may directly influence the intensity of the reflected light received by the optical power probe.

Neural network-based 3d printing error compensation method and system, and device

The present invention pertains to the field of 3D printing, and more particularly, relates to a neural network-based error compensation method, system and device for 3D printing. The present invention is directed to solve the problem of difficulties in performing error compensation on the model during 3D printing. In the present invention, errors generated by additive manufacturing are predicted and compensated through combination with the neural network in the field of artificial intelligence. The data are obtained by 3D scanning and other techniques. Then, by means of the neural network, the deformation function during 3D printing is learned and the prediction is completed, or the inverse deformation function is learned and direct compensation is completed. By means of the present invention, it is easier to perform error compensation on the new model, the precision of models printed is improved on the same hardware basis, or the requirements for hardware can be reduced for achieving the same precision.

Neural network-based 3d printing error compensation method and system, and device

X-ray imaging system and collision prevention method therefor

The present application provides an X-ray imaging system and a collision prevention method therefor. The X-ray imaging system includes a tube device, at least one sensor, and a controller. The tube device is capable of moving to a preset position so as to emit an X-ray. The at least one sensor is mounted on at least one surface of the tube device. The at least one sensor is configured to acquire a feedback signal within a preset sensing region. The controller is connected to the at least one sensor and the tube device, and the controller includes a determination module and a control module. The determination module is configured to determine, on the basis of the feedback signal, whether an obstacle is present in the preset sensing region and acquire position information of the obstacle. The control module is configured to control motion of the tube device on the basis of the position information of the obstacle.

Two-step diffusion method for preparing high-performance dual-main-phase sintered mischmetal-iron-boron magnet

A two-step diffusion method for preparing high-performance dual-main-phase sintered mischmetal-iron-boron magnet belongs to the preparing technical field of rare earth permanent magnet materials. The compositions of the two main phase alloys are RE-Fe—B (RE is Nd or Pr) and (Nd, MM)-Fe—B (MM is mischmetal), respectively. First, PrHoFe strip-casting alloy is used as a diffusion source. Next, a PrHo-rich layer is uniformly coated on the surface of (Nd, MM)-Fe—B hydrogen decrepitation powders. The higher anisotropic fields of Pr2Fe14B and Ho2Fe14B are used to improve the coercivity. Then, the ZrCu strip-casting alloy is used as a diffusion source. A Zr-rich layer is uniformly coated on the surface of the powders after the first-step diffusion, which prevents the growth of the MM-rich main phase grains during the sintering process and the inter-diffusion between the two main phases, thus obtaining high coercivity.

Assistance system and method for suspension device, and x-ray imaging system

Provided in the present application are an assistance system and method for a suspension device, and an X-ray imaging system. The suspension device includes a tube device, a tube controller, a motion driving device and an assistance system. The motion driving device is capable of driving the suspension device to move along a first coordinate system. The assistance system includes a measurement device and a control device. The measurement device is disposed between the tube device and the tube controller so as to obtain an initial force of an operator, wherein the initial force includes the magnitude and direction of a force along a second coordinate system in which the measurement device is located. The control device includes a calibration unit and a calculation unit. The calibration unit is used for calibrating the initial force to obtain a calibrated force. The calculation unit is used for performing a coordinate transformation on the calibrated force to obtain a torque value corresponding to the first coordinate system, and sending the torque value to the motion driving device to enable the motion driving device to provide assistance on the basis of the torque value.

Assistance system and method for suspension device, and x-ray imaging system

Provided in the present application are an assistance system and method for a suspension device, and an X-ray imaging system. The suspension device includes a tube device, a tube controller, a motion driving device and an assistance system. The motion driving device is capable of driving the suspension device to move along a first coordinate system. The assistance system includes a measurement device and a control device. The measurement device is disposed between the tube device and the tube controller so as to obtain an initial force of an operator, wherein the initial force includes the magnitude and direction of a force along a second coordinate system in which the measurement device is located. The control device includes a calibration unit and a calculation unit. The calibration unit is used for calibrating the initial force to obtain a calibrated force. The calculation unit is used for performing a coordinate transformation on the calibrated force to obtain a torque value corresponding to the first coordinate system, and sending the torque value to the motion driving device to enable the motion driving device to provide assistance on the basis of the torque value.

Table panel assembly, examination table, and x-ray imaging system

The present application provides a table panel assembly, an examination table, and an X-ray imaging system. The table panel assembly is arranged on a base of the examination table and is used for bearing an object under examination. The table panel assembly includes a support frame and a table panel. The support frame is mounted on the base. The table panel is mounted on the support frame. The table panel is movably connected to the support frame. A rotating shaft is formed between the table panel and the support frame. The table panel can be flipped outward relative to the rotating shaft. An accommodating space is formed between the table panel and the support frame, and the accommodating space can be used for placing and moving a detector.

Suspension device and x-ray imaging system

The present application provides a suspension device and an X-ray imaging system. The suspension device is configured to bear a tube device of an X-ray imaging system. The suspension device includes a plurality of sleeves and a guide rail assembly. Cross-sections of the plurality of sleeves have substantially the same shape but different sizes. The plurality of sleeves are sequentially arranged. The guide rail assembly is provided between at least one sleeve and another sleeve adjacent thereto. The guide rail assembly includes a protruding member extending along a surface of the at least one sleeve and a sliding member provided on the another sleeve and engaging with the protruding member. The sliding member is capable of moving relative to the protruding member so as to drive the sleeves to move relative to each other.

X-ray imaging system and collision prevention method therefor

The present application provides an X-ray imaging system and a collision prevention method therefor. The X-ray imaging system includes a tube device, at least one sensor, and a controller. The tube device is capable of moving to a preset position so as to emit an X-ray. The at least one sensor is mounted on at least one surface of the tube device. The at least one sensor is configured to acquire a feedback signal within a preset sensing region. The controller is connected to the at least one sensor and the tube device, and the controller includes a determination module and a control module. The determination module is configured to determine, on the basis of the feedback signal, whether an obstacle is present in the preset sensing region and acquire position information of the obstacle. The control module is configured to control motion of the tube device on the basis of the position information of the obstacle.

一种用于动力电池的液冷板

本实用新型公开了一种用于动力电池的液冷板，包括基板，基板上设置有流道，特点是流道的端面和侧面均为斜面，且斜面与基板的法线之间的夹角为30～60°，流道上相邻的两个面之间通过圆角过渡；优点是由于流道的端面和侧面均为斜面，使得整条流道的结构稳定性高、承载能力好，不易变形。

Assistance system and method for suspension device, and x-ray imaging system